Tracking Efficiency Uncertainty

17.11.2020, The charges to the task force

  1. Conduct systematic studies on the TPC single track efficiency uncertainty on a few standard datasets, e.g. AuAu200, BES, pp200 or 500 GeV etc. It will be preferred that the uncertainty can be evaluated more differentially in pT, eta/y, luminosity etc when statistics allows.
  2. Investigate on any possible improvement in the TPC simulator to improve the efficiency uncertainty, especially for the BES-II datasets.
  3. Expect a report from the task force (to be released as a STAR note) The report should include the above studies, as well as a description on standard procedures to evaluate the tracking efficiency uncertainty for other datasets.
  4. Timeline:  about 6 months - 1 year. If the full efforts are expected to take longer than this, we expect a preliminary report focusing on the findings from 1) to be released in about 6 months.    

Weekly meetings:  10:00 AM Eastern Time (US and Canada)

https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09

Meeting ID: 160 703 5037
Passcode: 099371
One tap mobile
+16692545252,,1607035037#,,,,,,0#,,099371# US (San Jose)
+16468287666,,1607035037#,,,,,,0#,,099371# US (New York)

Dial by your location
        +1 669 254 5252 US (San Jose)
        +1 646 828 7666 US (New York)
Meeting ID: 160 703 5037
Passcode: 099371
Find your local number: https://bnl.zoomgov.com/u/aoARs6rfR

Join by SIP
1607035037@sip.zoomgov.com

Join by H.323
161.199.138.10 (US West)
161.199.136.10 (US East)
Meeting ID: 160 703 5037
Passcode: 099371

Related documents, studies, and link to tool can be found HERE.

Tracking Efficiency Uncertainty meeting

2021-04-13 10:00
2021-04-13 11:00
America/New York
Tuesday, 13 April 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-04-06 10:00
2021-04-06 11:00
America/New York
Tuesday, 6 April 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-03-30 10:00
2021-03-30 11:00
America/New York
Tuesday, 30 March 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Minutes:

David has presented results from running the GMT code:

There are three attached sets of slides. Each compares the TTrees generated with a bfc chain:

  1. https://drupal.star.bnl.gov/STAR/system/files/gmt_lib_check.pdf compares trees generated under dev & .DEV2, in which the .DEV2 run includes a bfc chain option for KFVertex
  2. https://drupal.star.bnl.gov/STAR/system/files/DEV2_v2_noKFVertex.pdf is the same as 1. above, but .DEV2 does not include the bfc chain option for KFVertex
  3. https://drupal.star.bnl.gov/STAR/system/files/DEV2_KFVertex_effect.pdf compares the .DEV2 with the KFVertex & .DEV2 without the KFVertex
If the KFVertex option is on there is more events, when turned off the number of event basically agree. However the number of entries in DEV is two times what is reconstructed in .DEV2.
The entries in the final ntuple are coming from tracks being matched to MTD hits. The question now is if the actual number of hits reconstructed in the detector is also different between the libraries.

Tracking Efficiency Uncertainty meeting

2021-03-23 10:00
2021-03-23 11:00
America/New York
Tuesday, 23 March 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00
Minutes:

1. Yuri has done a transfer of 7.7GeV data to disk space leased by PAC that we can use for the studies at /gpfs01/star/pwg_tasks/TF_TrkEff

2. MTD software is now running in both .DEV2 and dev and returns data trees. Only problem remains that in dev there is a spurious crash at the end after the data is saved. David is now
comparing the outputs.

3. Yang He has presented QA studies of embedding in isobar data https://drupal.star.bnl.gov/STAR/system/files/isobar_embeding_testrun_QA_March18.pdf.
There is a strange pt-dependence observed in efficiency. It was discussed and suggest to look into 2D eta-phi dependence to see if it is related to the bad TPC sector.
It was discussed the effect effect of missing TPC sector could show up through nHits cut.
It was also suggested to try simulation with realistic pt spectra since some effects could be due to reweighting.
TimeTalkPresenter
09:00Isobar embedding QA ( 00:20 ) 0 filesYang He

Tracking Efficiency Uncertainty meeting

2021-03-16 10:00
2021-03-16 11:00
America/New York
Tuesday, 16 March 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 14:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-03-09 10:00
2021-03-09 11:00
America/New York
Tuesday, 9 March 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
Meeting minutes:

GMT - the code stransferrend to dev compiles, but crashes. The reasons seems to be forbidden access to the tree data structure. David will test if the is also tru in  .DEV2

Robert Licenik managed to recreate the embedding Pythia in to zero bias pp data. The results are different from what Dima showed. The reason could be that Dima was using a private reproduction of the data.

K->3pi update. The  bump in the reconstruction efficiency as a function of transverse radius is also in the MC. Possible cause could be a track splitting. It was suggested to check the invariant mass. It could also be a feature if the KFP when extrapolating into a region without hits. Need to try changing the KFP cut values.

TimeTalkPresenter
10:00The D0 reconstruction for different decay channels ( 00:20 ) 1 file
10:20Update on K->3pi ( 00:20 ) 1 file

Tracking Efficiency Uncertainty meeting

2021-03-02 10:00
2021-03-02 11:00
America/New York
Tuesday, 2 March 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-02-23 10:00
2021-02-23 11:00
America/New York
Tuesday, 23 February 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
TimeTalkPresenter
10:00K->3pi update ( 00:20 ) 1 file

Tracking Efficiency Uncertainty meeting

2021-02-16 10:00
2021-02-16 11:00
America/New York
Tuesday, 16 February 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
TimeTalkPresenter
10:00D0 Tracking Efficiency ( 00:10 ) 1 fileDiptanil Roy (Rutgers University)
10:10K->3pi from KFP ( 00:20 ) 1 file

Tracking Efficiency Uncertainty meeting

2021-02-09 10:00
2021-02-09 11:00
America/New York
Tuesday, 9 February 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-02-02 10:00
2021-02-02 11:00
America/New York
Tuesday, 2 February 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
Minutes:

GMT - according to Grigory  the software should close to relase ..next week?

D0 branching ratios -KFparticle Finder was run, but it is needed to tighten cuts. We could have the branching ratios possibly next week.

Robert is currently running embedding into zerobias pp data while lerning and checking Dimitry's code.

Petr - The MuMcAnalysisMaker was run. It was bad idea to run it in  old library. The PID plots will need to be added. Need to look into the definition of good an bad tracks.


Tracking Efficiency Uncertainty meeting

2021-01-26 10:00
2021-01-26 11:00
America/New York
Tuesday, 26 January 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-01-19 10:00
2021-01-19 11:00
America/New York
Tuesday, 19 January 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2021-01-12 10:00
2021-01-12 11:00
America/New York
Tuesday, 12 January 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
Minutes:
 GMT  status was discussed. Grigory - software should be ready with very soon. It is planned to revisit the 2014 data since there are perios with difeerent luminosities. Necessity of the simulator was discussed as well.

MuMc - Yuri has provided data with fixed target simulation, plus we will test on nightly production data.

KFP - by the next week Pavol should transfer codes to Diptanil to run the D meson test.

Tracking Efficiency Uncertainty meeting

2021-01-05 10:00
2021-01-05 11:00
America/New York
Tuesday, 5 January 2021
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00

Minutes:

Discussion about using StMuMcAnalysisMaker to study track quality and efficiencies. Most importantly while the code itself has to be run under TFG release it is only because if the added code functionalities. The code can be run on standard data productions and simulations. There are some functions that need to be added such as PID checks and V0 efficiencies. The code also has interface to results from KFParticle Finder, but thsi needs further work. David has agreed to have  a look at the code.

GMT - According to Grigory's email it should not take long before we have the code in dev and can start testing latest data.

Robert Licenik has agreed to rerun the analysis of the MC efficiencies as it was done by Dmitry Kalinkin, but this time on run14 AuAu data which where produced without the HFT in tracking. There is smaller minbias sample and HT triggered one. Would be good to have a look at both.

TOF - wanted to understand better the current status of the TOF simulator. Seems the last person working on it was Daniel Brandenburg. Need to find out more
TimeTalkPresenter
10:00Analysis meeting report ( 00:20 ) 1 filePetr Chaloupka

Tracking Efficiency Uncertainty meeting

2020-12-29 10:00
2020-12-29 11:00
America/New York
Tuesday, 29 December 2020
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00

Tracking Efficiency Uncertainty meeting

2020-12-15 10:00
2020-12-15 11:00
America/New York
Tuesday, 15 December 2020
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
Minutes:

Discussion about status of the GMT. The is not simulator so far for the GMT. It seems that fastsim based on hit position smearing should be sufficient.

There was a discussion if we could use K->3pi decay within TPC. KFParticle Finder woudl be useful for that, but it needs information about cov. matrix at the last point which is not currently saved in the data.
Such possibility exists in the TFG release. This would mean to reproduce small data sample under TFG.

Tracking Efficiency Uncertainty meeting

2020-12-08 10:00
2020-12-08 11:00
America/New York
Tuesday, 8 December 2020
https://bnl.zoomgov.com/j/1607035037?pwd=WDVqaEdwa0RtTEM5a1VvZ24yU2gwdz09, at 15:00 (GMT), duration : 01:00
TimeTalkPresenter
10:00Tracking efficiency uncertainty in p+p run 12 ( 00:20 ) 0 filesDmitry Kalinkin

Related documents

Links  to documents related to tracking and simulations

Tracking:

Tracking Efficiency Uncertainty meeting

2020-12-02 10:00
2020-12-02 12:00
America/New York
Wednesday, 2 December 2020
https://cesnet.zoom.us/j/3472866, at 15:00 (GMT), duration : 02:00
TimeTalkPresenter
10:00Tracking Efficiency Uncertainty (known issues) ( 00:20 ) 1 fileYuri Fisyak
10:20Previous eff. studies ( 00:20 ) 1 file